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- Potato Virus Y 1
- Potato virus Y 1
- Potatoes 6
- Potatoes -- California -- Modoc County -- Varieties 1
- Potatoes -- California -- Siskiyou County -- Varieties 1
- Potatoes -- Disease and pest resistance -- Research -- Oregon 1
- Potatoes -- Diseases and pests 1
- Potatoes -- Oregon 2
- Potatoes -- Oregon -- Klamath County -- Field experiments 3
- Potatoes -- Oregon -- Klamath County -- Varieties 1
- Potatoes -- Packaging -- Public opinion 1
- Potatoes -- Purchasing -- Oregon 1
- Potatoes -- Research -- Lower Columbia River Valley (Or. and Wash.) 1
- Potatoes -- Research -- Oregon 1
- Potatoes -- Soils -- Lower Columbia River Watershed (Or. and Wash.) 1
- Potatoes -- Transportation -- Oregon 1
- Potatoes -- Varieties -- Oregon -- Field experiments 3
- Potásico 1
- potássio 12
- potencial da água 2